The table shows the age, in years, of employees in a company. Age (a) in years
Frequency
18 < a < 20
3
20 < a < 22
2
22 < a < 24
7
24 <a < 26
8
26 <a
0
a) Find the modal class interval.
<a<
b) Work out an estimate of the mean age of these employees.

the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.